| 摘要 |
<p>PURPOSE:To produce a card-type recording medium hard to be easily interpolated by using a metal generating a magnetic transformation from non-magnetic to high-magnetic by a mechanical deformation. CONSTITUTION:The title recording medium has a rectangular card structure as a whole similar to a magnetic card or the like and is provided with a magnetic stripe 11 and a data recording part 12 made of an austenitic stainless steel. On a card substrate 13 made of PET, paper, or the like, the thin plate 14 of austenitic stainless steel having a metastable austenitic phase at room temp. is laminated. Therefore, by applying a mechanical deformation, such as rolling, embossing, punching, and stamping by wire dots, to the information recording part 12, a part of a top surface of the thin plate 14 applied with the mechanical deformation is made a high-magnetic material. Therefore, this magnetic transformation can be magnetically read by a magnetic head, a magnetic resistor, or the like. The position and number of highly magnetized parts 15 is recorded under control, and by reading the recorded data, the balance, the number of use, and the like can be detected.</p> |
